Improvement in toy steam-engines



dntrd ltere @met @twine Letters Patent No. 91,758, dated .Tru-nc 22,1869.

IMPROVEMENT IN TOY STEAM-ENGINES.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that I, PHILANDER MACY, ofRochester, in the county of Monroe, and State of New York, have inventedcertain new and useful Improvements in Toy Steam-Engines; and I dohereby declare that the following is a full; clear, and exactdescription thereof, reference being had to the accompanying drawings,making part of this specification, in which- Figure 1 is a sectionalelevation of my invention.

Figure 2 is a vertical central section of the valvebox and part of thecylinder, the full lines showing the induction-passages open, and thered line indicating the position of the valve when the exhaust-passageis open to the cylinder.

Figure 3 is an elevation of the plug-valve a..

The object of my invention, the nature of which will be understood' byreference to the drawings and specification, is to produce a cheap andsimple toy-engine, devoid of danger, and which can be readily managed bya child.

To cnableothers to make and use my invention, I will describe itsconstruction.

1 make the boiler A in the form of a hollow circular disk, composed of afiat bottom-plate, e, and-a concave top-plate, f, which are joined atthe periphery with a fold, in the usual manner.

The plate f may oe crimped in any desired orna mental form, so as togive sufiicient steam-room.

The vertical stay i is soldered to both plates, to prevent bilging orbursting.

The large bottom e aiiords considerable heating-surface, and since thewater is necessarily shallow, steam is raised quite rapidly, when theboiler is placed over a gas-jet or lamp, or set upon a hot stove.

Upon the top-plate of the boiler, I erect a singleacting toy-engine,composed of valve and box C, cylinder B, beam D, and crank-shaft anddy-wheel E, the

valve-box having direct communication with the small steam-dome b,through the pipe y.

The connections between the working-parts are al1 made by means of wiresbent to the proper shape. The beam vibrates upon the wire-support d,soldered to the cylinder. The main links are connected to the piston bya short wire, soldered to the piston-rodat right angles to it, as shownin 6g. 2. The piston-rod is guided by a small wire, looped around it,and soldered to the cylinder. The crank-shaft supports are given two orlthree turns aroundhe shaft, to form bearings, and are soldered at theirlower ends to the boiler. These parts can also be made of sheet-metal,punched out by dies and bent to the proper form.

The valve-box C is bored out either straight or tapering, to receive theplug-valve a, figs. 1, 2, and 3, which is tted steam-tight to it, andworked by the rod b', hooked at one end to the main crank, and at theother to the arm` c of the valve.

The valve-box has formed within it the inductionpassage y, thecylinder-port z, and the exhaust-passage x, all communicating with thevalve-chamber, at

a distance of one-quarter of the circumference apart.

Across the valve a, at a proper point to register with these passages, Icut the channel a', figs. 2 and 3, to such a depth which shall allow afull opening of two Vpassages at once, at each extremity of the throw,which'throw must consequently be one-quarter of a circumference. The twoextreme positions of the valve are shown by the black and red lines inIig. 2(

The valve is kept in its place by a washer and pin, as shown in g. 1.

A safety-valve, o, may be applied at any convenient point on the boiler.

The boiler may be constructed of any kind of sheetmetal, tin-platebeingpreferred as the cheapest.

What I claim as my invention, and desire t'e secure by Letters Patent,is

l. The construction and arrangement of the boiler` 2. The arrangement ofthe boiler A, passages x y z, valve c, channel a', cylinder B, supportd, beam D, and connecting valve-rod b', all constructed substantially asherein set forth.

- PHILANDER MACY.-

Witnesses FRANCIS L. HUGHES, F. H.l CLEMENT.

